利用含砷废酸制备亚砷酸铜,并将所得亚砷酸铜应用到铜电解液的净化.Copper arsenite prepared from waste acid containing arsenic was applied in copper electrolyte purification.探讨职业性接触氯丹、含砷化合物灭蚁药物对作业人员肝功能水平的影响.To explore the level of liver function damage in...
他穿着短裤，膝盖的伤口已经结痂。He had short trousers and scabby knees.你割破了, 血会凝固、结痂.When you cut yourself , blood clots and forms a scab.这个伤口会疼痛难忍，直到大约10天后结痂才会好些。The area can be very painful until scabs form after about ten days....
These differences are not always as pronounced as among hazelnut varieties of different provenance.这些差别未必象不同种源的榛子变种之间所表现的那样明显.Nut trees such as filbert, hazelnut and yellowhorn produce well with only sun in the morning.像...